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When to Plant
Lettuce in 198

Planting vegetable seeds at the correct time is the most important step for getting the most out of your garden. Knowing exactly when to plant lettuce in your garden in 198 will increase growing success and provide better yields.

Check optimal planting dates regularly for best results because the weather, and our results, change daily. 

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The optimal time to plant lettuce in 198 is  - . The best day is with a success rate of %.

 

Anywhere between 70-100% is great. If consistently below that you may want to start growing from seedling or young plant, or possibly grow in sheltered environment

Compatibility
Avg. Temp (F)
Soil Temp (F)
Humidity
Precipitation
Sunlight Hours
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Growmigo - Today Graph

Optimal time frame to start

Frost free days

Grow period

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Important lettuce growing information relevant to your exact garden location in 198:

The total number of frost free days for your garden in 198 is days, but the total number of optimal days to plant lettuce is days.

For best results you should start planting lettuce in days starting .

Gardening Data Sources

for Lettuce

University Research

Cooperative Extension

Gardening Websites

Gardening Blogs

Seed Suppliers

Seed Breeders

Garden Centers

Home Gardeners

Other Sources

Gardening Data Sources

for Lettuce

Cooperative Extension

22 sources

Gardening Websites

41 sources

Gardening Blogs

23 sources

Seed Suppliers

94 sources

Seed Breeders

76 sources

Home Gardeners

1 sources

Other Sources

26 sources

How to Grow Lettuce in 198

How to grow lettuce: most gardeners grow Lettuce from seed directly sown outside in the ground or in pots. Lettuce grows very quickly so transplanting is not necessary.

Sow lettuce seeds 0.4 inches (1.1 cm) deep, 1.5 inches (3.8 cm) apart, and rows 15.2 inches (38.5 cm) apart. Optimal soil temperature for germination is between 55.2°F (12.9°C) and 70.6°F (21.4°C). Seeds will germinate in about 6-13 days.

Lettuce requires only 40-55 days to be ready for harvest from seed, depending on the lettuce variety selected and the weather during the growing season. Do no wait until lettuce plant bolts to fully mature plant, bearing flowers, because the sweet taste becomes bitter.

Lettuce plants will bolt in high temperatures of 90°F (32.2°C) and long exposure to sun. To avoid this you may want to plant lettuce seeds in a more shaded area reducing exposure to sun.

Optimal day air temperature for growing lettuce is between 57°F (13.9°C) and 65.6°F (18.7°C). Optimal night temperatures are between 49.7°F (9.8°C) and 56.6°F (13.7°C). Lettuce can endure air temperatures as low as 32°F (0°C) during the night and up to 70°F (21.1°C) during the day.

Soil temperature during lettuce growth should be between 46°F (7.8°C) and 67.7°F (19.8°C) in optimal conditions, but can withstand soil temperatures as low as 40°F (4.4°C).

Required soil pH for lettuce growth is 6.0-7.2 but the optimal pH is 6.2-6.5.

Optimal sunlight for Lettuce is 6 hours per day. Lettuce should be watered between 1.0-1.5 inches (2.5-3.8 cm) of water per week, adjusting for weather conditions and type of soil accordingly.

Lettuce spacing:  When planting lettuce seeds directly into the ground sow seeds 0.4 inches (1.1 cm) deep spaced 1.5 inches (3.8 cm) apart with rows spaced 15.2 inches (38.5 cm) apart.

How to grow lettuce in your garden: one of the best things about growing lettuce is that you can harvest in a relatively short period of time. To ensure that you have lettuce throughout the growing season we recommend you plant new lettuce seeds every 1-2 weeks. As you are harvesting the first batch, your next batch is getting ready.

Harvest outer leaves as soon as their big enough to eat. We recommend using your hands to snap off the leaves rather than tools to cut the leaves. The best thing about lettuce is that after you harvest it will continue to grow and produce leaves so long as proper temperatures exist.

About lettuce: when talking about lettuce its important to distinguish between the common garden lettuce (Lactuca sativa) we eat today and what’s known as wild lettuce (Latuca Scariola) which has been around for thousands of years. Wild lettuce grows like a weed and was used by ancient people for medicinal purposes. 

The ancient Egyptians used it as an aphrodisiac and stimulant and used its seeds to make oil for cooking. However, the ancient Romans used to eat lettuce after a meal before taking a nap because they believed it induced drowsiness. How could the same wild lettuce produce opposite effects?

Research in 2005 by the Italian botanist Giorgio Samorini helped solve that question. He proved that the white milky sap that secretes from the plant, called lactucarium (and known as ‘lettuce opium’ in the 19th century) in high doses acts as a stimulant, containing bitter alkaloids, the active ingredient in cocaine. However, in low doses it has sedative effects. 

Lettuce is estimated to have originated from the Mediterranean area, and introduced to the New World by Christopher Columbus. Lettuce is not difficult to grow in cool weather climates, but may be very challenging to grow in warm climates. 

The easiest way to grow lettuce is to directly sow into the ground – it does not like to be transplanted. If you do decide to transplant be sure not to hurt or damage the delicate roots and do it in the late afternoon to make sure they are not immediately exposed to the hot sun, having some time to cope and adjust. If it gets too hot you may need to provide shade for the plant to grow successfully. Lettuce is rich in Vitamin A, Vitamin C, and dietary fiber.

For more real-time hyper local detailed growing information download the GardenWeather App on IOS. It is now the leading gardening and weather app, more accurate than The USDA zone map for frost dates. GardenWeather™ is a technology and agri-tech startup providing real-time hyper local planting and gardening recommendations enabling home gardeners and homesteaders to make data-driven gardening decisions.

Use these images to know if your lettuce is heading in the right direction and growing properly. Exact number of growing days varies for each lettuce variety. Below is the average number of days for each stage gathered from many different varieties.

Germination
9 days
Young seedling
11 days
Mature seedling
15 days
Young plant
14 days
Mature plant
18 days
Total days:
67 days

Germination
9 days
+
Young Seedling
11 days
+
Mature Seedling
15 days
+
Young Plant
14 days
+
Mature Plant
18 days
=
Total Days
67 days

Lettuce Germination Guide

(Stage 1: Germination)

Germination is the process by which a plant grows from a seed. It is the first stage of the plant growing process and it begins when the seed is sown and ends when the radicale emerges out of the seed.

All seeds require proper soil temperature, moisture, air and light conditions to germinate successfully. However, during the germination stage the seeds require more soil warmth and moisture than light exposure.

Seeds respire just like any other living organism, requiring oxygen and producing carbon dioxide (CO2), so it is crucial to use a soil media that is sufficiently aerated so that the seeds do not “suffocate”.

100% of our growing experts recommend to directly sow lettuce seeds into the ground. What is direct sowing and why do I care about it?

Required
Optimal
Required germination period

4-14 days

(35 sources)
Growmigo - Germination Period
Optimal germination period

6-13 days

(50 sources)
Required soil temp.

38.8º-78.2ºF / 3.8º-25.7ºC

(110 sources)
Growmigo - Soil Temp
Optimal soil temp.

55.2º-70.6ºF / 12.9º-21.4ºC

(126 sources)
Required day temp.

38.3º-85ºF / 3.5º-29.4ºC

(3 sources)
Growmigo - Day Temp
Optimal day temp.

60º-65.7ºF / 15.6º-18.7ºC

(7 sources)
Required night temp.

38.3º-85ºF / 3.5º-29.4ºC

(3 sources)
Growmigo - Night Temp
Optimal night temp.

58.3º-63.3ºF / 14.6º-17.4ºC

(6 sources)
Growmigo - Seed Depth
Optimal seed depth

0.4 inches / 1.1 cm

(47 sources)
Growmigo - Plant Spacing
Optimal plant spacing

1.5 inches / 3.8 cm

(58 sources)
Growmigo - Row Spacing
Optimal row spacing

15.2 inches / 38.5 cm

(57 sources)

Lettuce Growing Guide

(Stages 2-5: Growth)

Once seed has germinated and radicale has emerged the second stage of the plant growing process begins, developing from radicale to cotyledon -the embryonic first leaves of the seed forming a young seedling.

During the third stage of plant development cotyledon develops to 3-4 true leaves, stem begins to grow, becoming a mature seedling.

In the fourth stage the mature seedling develops to a young plant, ready for transplanting.

The fifth stage of plant development the plant is fully mature bearing fruit and/or flower.

The following guidelines apply to all of the lettuce plants’ needs during stages 2-5 from radicale emergence to full maturity. During these stages sunlight becomes a more active participant in plant growth and development than in the germination phase.

Soil pH is an important factor during these stages as well. What is pH and why is it important?

Growmigo - Sunlight
Requires direct sunlight

(3 sources)
Required
Optimal
Required soil temp.

40º-65ºF / 4.4º-18.3ºC

(21 sources)
Growmigo - Soil Temp
Optimal soil temp.

46º-67.7ºF / 7.8º-19.8ºC

(3 sources)
Required day temp.

47.5º-70ºF / 8.6º-21.1ºC

(2 sources)
Growmigo - Day Temp
Optimal day temp.

57º-65.6ºF / 13.9º-18.7ºC

(13 sources)
Required night temp.

32º-43ºF / 0º-6.1ºC

(3 sources)
Growmigo - Night Temp
Optimal night temp.

49.7º-56.6ºF / 9.8º-13.7ºC

(12 sources)
Required sunlight hours

5-12

(35 sources)
Growmigo - Sunlight
Optimal sunlight hours

6-6

(33 sources)
Required soil pH

6-7.2

(37 sources)
Growmigo - PH
Optimal soil pH

6.2-6.5

(74 sources)
Required watering amount

1-1 inches / 2.5-2.5 cm (per week)

(20 sources)
Growmigo - Watering Amount
Optimal watering amount

1-1.5 inches / 2.5-3.8 cm (per week)

(18 sources)
Growmigo - Seed Depth
Optimal depth

0.4 inches / 1 cm

(1 sources)
Growmigo - Plant Spacing
Optimal plant spacing

8.6 inches / 21.7 cm

(50 sources)
Growmigo - Row Spacing
Optimal row spacing

15.6 inches / 39.6 cm

(47 sources)

How difficult is it to grow lettuce?

Growing lettuce, or any other vegetable for that matter, is not hard, however some plants require more attention and care than others depending on the following factors:

 

Are you starting to grow your plant from seed? seedling? young plant? Depending on what stage plant you choose to plant will impact growing difficulty and patience.

The length of the growing season for your exact garden location.

If you have a short growing season and you want to start growing from seed then you may need to start the growing process in a sheltered environment (greenhouse or inside your home) which will require more involvement in the growing process.

Whether you direct sow in the garden or start in trays and then transplant also affects the level of difficulty

Growing difficulty level - 0

Growing patience level - 0

Companion Planting Guide

for Lettuce

What is companion planting?

Companion planting is intentional planting of two or more vegetables and/or flowers next to each other in order to positively impact plant health and yield

good
Companion plants for lettuce
Growmigo - Companion Planting
Onions
Growmigo - Companion Planting
Strawberries
Growmigo - Companion Planting
Cucumbers
Growmigo - Companion Planting
Carrots
Growmigo - Companion Planting
Radishes
bad
Companion plants for lettuce
Growmigo - Bad Companion Planting
Parsley
Growmigo - Bad Companion Planting
Celery
Growmigo - Bad Companion Planting
Cabbage
Growmigo - Bad Companion Planting
Cress

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